create-command

A guide for creating Claude Code slash commands, which are custom commands started with a slash inside Claude Code.

In plain words
What is it for?
Use it when adding project or personal slash commands, including commands with arguments, restricted tools, or a selected model.
Why use it?
It explains where command files belong and how to describe their arguments and tool access in the required YAML header.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/jpoutrin/product-forge/create-command
Any agent
npx skills add jpoutrin/product-forge --skill create-command
Clone the repo
git clone --depth 1 https://github.com/jpoutrin/product-forge

Made for: Claude Code, Codex.

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,738 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00050 $0.01738
Opus 5 $0.00025 $0.00869
Sonnet 5 $0.00010 $0.00348
Haiku 4.5 $0.00005 $0.00174

Measured 2d ago against content hash 76239b243b2e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-command scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/claude-code-dev/skills/create-command/SKILL.md · 309 lines

How it starts

The opening of the file, as written. The whole thing — 309 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create Command Skill

Create new Claude Code slash commands with proper configuration and advanced features.

Command Types

Project Commands

Commands stored in your repository and shared with your team.

Location: .claude/commands/ or plugins/<plugin>/commands/

Shows "(project)" in /help.

Personal Commands

Commands available across all your projects.

Location: ~/.claude/commands/

Shows "(user)" in /help.

Command File Format

Commands are markdown files with YAML frontmatter:

---
description: Short description shown in /help
argument-hint: <required-arg> [optional-arg]
---

# Command Name

Instructions for Claude when this command is invoked...

Frontmatter Fields

Field Purpose Default
description Brief description of the command Uses first line from prompt
argument-hint Arguments shown in autocomplete None
allowed-tools List of tools the command can use Inherits from conversation
model Specific model string Inherits from conversation
disable-model-invocation Prevent SlashCommand tool from calling false

Argument Placeholders

All Arguments: $ARGUMENTS

Captures all arguments passed to the command:

---
description: Fix a GitHub issue
argument-hint: <issue-number> [priority]
---

Fix issue #$ARGUMENTS following our coding standards.

# Usage: /fix-issue 123 high-priority
# $ARGUMENTS becomes: "123 high-priority"

Positional Arguments: $1, $2, etc.

Access specific arguments individually:

---
description: Review pull request
argument-hint: <pr-number> <priority> <assignee>
---

Review PR #$1 with priority $2 and assign to $3.
Focus on security, performance, and code style.

# Usage: /review-pr 456 high alice
# $1 = "456", $2 = "high", $3 = "alice"

Bash Command Execution

Execute bash commands before the slash command runs using the ! prefix.

IMPORTANT: You MUST include allowed-tools with the Bash tool.

Read the full file on GitHub · 309 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 309 lines · 50 tokens per session scan A 76239b243b2e

Subscribe to this mod's changes

create-command is a skill published in the GitHub repository jpoutrin/product-forge (15 stars, last pushed 6mo ago), licensed MIT. It adds 50 tokens to every session and 1,738 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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